baber/WOPTO huggingface dataset:
Patent GB-871647-A (GB)
Title: Neutralizing circuits
IPC: H03J5/02
Filed: 1957-07-16
Abstract: 871,647. Radio receiver switch tuning arrangements; valve frequency selective amplifying circuits: STANDARD COIL PRODUCTS CO. Ltd. July 16, 1957 [July 27, 1956], No. 22537/57. Classes 40(5) and 40(6). A tuner, particularly for television receivers comprises a coil turret having substantially uniform capacitance to ground over several channels and a valve amplifier neutralized over the several channels by a circuit comprising a three-terminal capacitor in series with the neutralizing capacitor. The invention also embraces an r.f. amplifier comprising a triode 24 having an output coil 81<SP>1</SP> feeding a neutralizing capacitor 96 via a three-terminal capacitor 94 and a seriestuned grid circuit. The circuits described are generally similar to those described in Specification 829,403. Television signals at terminals 100 are fed via a balancing transformer 21a and wavetraps 102, 104, 105 to a series tuned circuit 89, 86<SP>1</SP> in the grid circuit. The neutralizing bridge circuit comprising capacitances 93, 96, the feedthrough capacitor 94 and the grid-anode capacitance is preferably balanced, so that neutralizing is maintained over all channels. Fig. 27 shows a modification in which the feed-through capacitor 265 is connected to the input coil 256. The theory of the circuits is described. Turret tuner construction. The turret may be of the type described in Specification 722,787 or, as shown in Fig. 3 may comprise only two discs 37, 38. A lug at the left-hand end of each coil panel 25 engages a slot 62 in disc 37. Disc 38 is provided with tongues 61 to engage apertures in each coil panel 25. A shield 55 is provided to screen the input circuits, carried by the projecting right-hand ends of the panels 25. Specification 703,946 also is referred to.
Patent GB-1508786-A (GB)
Title: Electric power supply tracks particularly for mine equipment
IPC: B60M1/34
Filed: 1974-05-21
Abstract: 1508786 Mining installations PITCRAFT Ltd 5 May 1975 [21 May 1974] 22541/74 Heading E1F [Also in Division H2] Conveyors 5 supporting a mining machine 9 each comprise an electric power supply track consisting of a conduit 2 having a slot 16 and housing supply conductors. The slot is closed by seals which may be resilient flaps or inflated tubes. A wedge 23 secured to the machine 9 extends within the seal into the conduit and is linked 22 to two shoes 21 connected to be slidable along the conductors as the machine moves along the conveyor. The conduit may be pressurised with air, N 2  or an inert gas. The track may be attached to the goaf side wall of .the conveyor, at ground level alongside or between rails or suspended from mine arches. The track may comprise successive unit lengths in articulated electric connection.
Patent GB-1497766-A (GB)
Title: Conveying apparatus
IPC: B65H29/00
Filed: 1976-06-01
Abstract: 1497766 Conveying sheets ANNELIESE FALKENSTEIN [trading as LAGER-UND FORDERTECHNIK] 1 June 1976 [7 June 1975] 22552/76 Heading B8R Sheets 11 are conveyed by pairs of grippers 13, 15 supported on opposite ends of carrier members 9, each member 9 being supported on a member 6 supported by an endless chain and also carrying rollers running along rails 2, 3, the gripper bodies 16 carrying ball-and-spring detents to engage selected recesses 20 in the members 9 to locate the grippers laterally, while the lateral distance between the grippers is adjustable while the conveyer is running by means of cams 22 engaging recesses in the gripper bodies. The grippers can be opened by cams 24 acting vertically on a rack-andpinion mechanism.
Patent GB-886140-A (GB)
Title: Improvements in or relating to organosilicon compounds
IPC: C07F7/18
Filed: 1960-06-28
Abstract: The invention comprises o-disilyl benzenes which are compounds of the formulae <FORM:0886140/IV (a)/1> (A) <FORM:0886140/IV (a)/2> (B) <FORM:0886140/IV (a)/3> (C) where R is methyl, ethyl, vinyl or phenyl, and R1 is C1-5 alkyl.  Compounds of the formula A are prepared by reacting o-iodobromobenzene and a silane R2SiHX, where X is Cl or Br, with magnesium.  Solvents are preferably present.  These compounds may be converted to compounds of the formula B by reacting with an alcohol R1OH, preferably in the presence of an alkali metal hydroxide.  The alkoxy compounds may be converted to the indan type of disiloxane, formula C, by hydrolysis, preferably in the presence of an alcohol and an alkaline catalyst. They may also be cohydrolyzed with conventional organohalo- or alkoxy-silanes to form copolymers. The indan type of disiloxane may itself be polymerized, alone or with other siloxanes, e.g. in Example 8, the disiloxane <FORM:0886140/IV (a)/4> is heated with potassium dimethylsilanolate to form an oil which is copolymerized with (Me2SiO)4 in the presence of KOH to produce a viscous copolymeric oil.  Uses: Lubricants, elastomers, electrical insulation, hydraulic fluids and laminating resins. Specification 804,097 is referred to.
Patent GB-942141-A (GB)
Title: Apparatus for cable manufacture
IPC: D07B3/08
Filed: 1960-06-29
Abstract: 942,141. Cable making apparatus. WESTERN ELECTRIC CO. Inc. June 29,1960 [July 13, 1959], No. 22715/60. Heading D1T. Cable-making apparatus for the simultaneous production of cable cores of like or different form and comprising strand supply units and binders forming groups of strands has means for directing selected groups of strands to a core binder. Strands from supply reels on stands 12, Fig. 1, are drawn through binding units 14 so pivoted that groups of strands leaving them may be directed to one or other of the binding units 11 associated with take-up units 10. Each strand binding unit 14 includes an oscillating head creating random lay in each group, as described in Specification 854, 700. After leaving the core binding unit, each core is passed through a synchronizing unit.which controls the speed of take-up in each unit 10. A snubber unit is provided to grip the core and hold it against rearward movement when the take-up unit stops and the core is cut.
Patent GB-419108-A (GB)
Title: Improvements in or relating to roses for watering cans and the like
IPC: A01G25/14
Filed: 1933-08-15
Abstract: 419,108. Spray roses. SIDDLE, E., 230, Stainbeck Lane, Leeds. Aug. 15, 1933, No. 22727. [Class 69 (iii).] In roses for watering-cans &c. of the kind having a detachable spray plate, one part, e.g. the spray plate 1, is provided with a lever rim 2 adapted to engage an annular seal 4 on the other part which, in form shown is provided with a screwed boss 5 to engage a water can.
Patent GB-881870-A (GB)
Title: Improvements in or relating to direct current power sources empolying rectifying systems
IPC: H02M7/06
Filed: 1957-11-20
Abstract: 881,870. Rectifying. COLUMBIA-SOUTHERN CHEMICAL CORPORATION. Nov. 20, 1957 [Aug. 22, 1957], No. 22747/61. Divided out of 881,867. Class 38 (2). A rectifying circuit comprising two or more parallel-connected full-wave rectifier circuits using semi-conductor rectifiers, e.g. as disclosed in Specification 881,867, feeds a load 806 and an electrolytic cell 802 in parallel. The cell may be a battery and the load may be an electrolytic cell for the electrolysis of brine &c. Alternatively both cells may be for electrolysis. The cell serves as a voltage-surge arrester. Fuses and A.C. overload circuit-breakers may be included for protection.
Patent GB-718284-A (GB)
Title: Process for the modification of metal-containing synthetic resins
IPC: C08G79/00
Filed: 1951-10-01
Abstract: Synthetic resins formed by the process of Specification 718,283 are modified by blowing oxygen through them at elevated temperature, e.g. 160 DEG C., followed, if desired, by addition of one or more aliphatic or aromatic dicarboxylic acids or anhydrides, resin acids, or higher molecular weight fatty acids or their polymerizable esters. Suitable dicarboxylic acids are adipic, succinic, sebacic, maleic, phthalic or terephthalic.  Colophony may be used as a resin acid. Suitable fatty acids are soya oil fatty acid, coco-nut oil fatty acid, linseed oil acids, oleic acid, stearic acid or acids obtained by oxidizing mixtures of paraffins.  Polymerizable esters of these acids on the vinyl or allyl esters.  The treatment with oxygen may be carried out in presence of an oxidation catalyst, e.g. benzoyl peroxide.  It may last for 20-30 hours.  In the example aluminium butylate was refluxed with acetoacetic ester, volatile matter was removed by heating if desired in vacuum.  Oxygen was blown through the oil residue in presence of benzoyl peroxide.  A thermoplastic brown resin soluble in butanol, benzene, monial spirits or ethanol results.
Patent GB-584346-A (GB)
Title: Improvements relating to joint making packing
IPC: B65D8/06
Filed: 1944-11-17
Abstract: 584,346. Joint-making packing. TECALEMIT, Ltd., and LE CLAIR, C. C. S. Nov. 17, 1944, No. 22892. [Classes 122 (iii) and 122 (v)] A flexible sealing ring of the kind used between overlapping parts of two members to one of which fluid is supplied under pressure and the other of which is formed with an annular recess housing the ring, comprises at least one flexible annular locating rib 12, Fig. 3, disposed between, spaced from and integral with two spaced annular flexible sealing lips 10, 11 so as to form two permanently open recesses 13, 14 in the ring between the rib 12 and the lips 10, 11. The lips 10, 11 are pressed by the fluid in the recesses 13, 14 against a side wall 7c of a recess 7 in the cover of a pressure vessel 5 and the vessel wall respectively. The sealing ring may be of rubber, leather or other flexible fluid impermeable material. The locating rib 12 may have spaced slots or holes 15, Fig. 3, to allow passage of pressure fluid from one side of the rib to the other.
Patent GB-1073329-A (GB)
Title: Solution polymerization of isoprene with aluminium trialkyl titanium tetrachloride catalysts
Inventor: WITTE JOSEF
IPC: C08F136/08
Filed: 1966-05-23
Abstract: Polyisoprene having predominantly 1,4-cislinkages is made by polymerizing isoprene while dissolved in a hydrocarbon solvent containing an aluminium trialkyl/TiCl4 catalyst activated by 0.05 to 5 moles of an ether, per mole of the trialkyl, and 0.05 to 50 moles, per mole of TiCl4, of a halogenated alkane carrying at least two halogen atoms on the same or on adjacent carbon atoms.  The catalyst may be prepared in the presence of at least part of the isoprene to be polymerized.  The ether may be di-n-butyl ether, diisoamyl ether, low molecular weight polypropylene oxide, diphenyl ether or anisole. The halogen compound may be 1,1-dichloroethane, 1,2-dichloroethane, dibromomethane, 1,2-dibromoethane, 1,1,2-tribromoethane, or 1,2-dichloro- and 1,2-dibromoethane.
Patent GB-1076875-A (GB)
Title: Heat exchangers
IPC: F28D7/08
Filed: 1965-05-31
Abstract: 1,076,875. Tubular heat exchangers. LA FLEUR CORPORATION. May 31, 1965 [June 1, 1964], No. 23018/65. Heading F4S. [Also in Division F2] A heat exchanger comprises an inlet header 16 and an outlet header 18 mounted one on each side of a housing 11 and between which extend a plurality of flexible tubes 20 each suspended in the form of a catenary curve between the headers. Preferably the tubes are thin-walled tubes of stainless steel, the tube ends being secured to the headers 16, 18 by welding (Fig. 3) or rolling (Fig. 5). In use, helium gas used as the working fluid in a gas-turbine power plant, flows through the tubes and is heated by hot combustion gases flowing through the housing 11 from an inlet 12 to an outlet 14. Heat insulation 15a covers the housing and the headers.
Patent GB-927284-A (GB)
Title: Protection of ferrous metal surfaces
IPC: C23F13/02
Filed: 1959-07-07
Abstract: 927,284. Preventing corrosion, cathodically. SINCLAIR REFINING CO. July 7, 1959 [July 30, 1958], No. 23243/59. Class 123 (1). [Also in Group XXXVI] Iron and steel surfaces in contact with a corrosive liquid, especially soil or sea water containing dissolved oxygen contained in ballast tanks, or in contact with pipe lines, are protected by adding to the liquid small amounts of ions of Zn, Cd, or Mn, and applying a D.C. potential with the steel surface as cathode of minus 0.2 to 1.5 volts. Halides or sulphates of the metals are used and glucose may be added to form a 0.001 N to 0.01 N solution of the salt. After a current density of 1 to 50 milliamps per S.F. has been applied, the current may be reduced. The potential may be generated by a magnesium anode. It is stated that the metal ions are plated on the steel surface, and may then be converted to insoluble hydroxides or basic carbonates. U.S.A. Specification 2,200,469 is referred to.
Patent GB-634240-A (GB)
Title: Improvements in or relating to cup-shaped foil capsules
IPC: B65D41/14
Filed: 1947-08-22
Abstract: 634,240. Stoppers. BRUUN, O. J. Aug. 22, 1947, No. 23319. [Class 125 (iii)] A cup-shaped bottle capsule, having compressed overlapping side folds, of metal foil or metal foil combined with paper, is fully formed and the folds subsequently cemented. An adhesive, such as a solution of polyvinyl chloride or of a co-polymer of vinyl chloride and vinyl acetate, is applied to both sides of the material, and, after formation of the capsule, is heat-activated: alternatively the formed capsule may be coated with a varnish or like liquid adhesive which seeps into crevices between the folds and cements them when dried. A sealing washer may be furnished in the bottom of the capsule. Specification 430,299 is referred to.
Patent GB-1549014-A (GB)
Title: Floor heating systems
IPC: E04B5/48
Filed: 1976-06-08
Abstract: The heater is in the form of a hot water carrying pipe coil supported on a suitable base, such as a sub-floor, and having spaced parallel pipe ducts interconnected by pipe bends. A pair of parallel supporting laths, preferably in the form of flat bars, are fixed on the sub-floor in spaced relation to the opposite side walls of a room to be heated, and circularly curved members are secured to the laths at spacings therealong equal to the spacing between the pipe ducts, the curved members on one lath being staggered longitudinally relative to the curved members on the other lath. The connecting bends of the pipe coil are looped around these curved members, which latter thus serve as a pipe laying gauge. Stop members are secured to the laths in spaced relation to the free ends of the curved members to form, in effect, troughs for the connecting pipe bends. Heat transmitting metal lamellae are secured to the pipe ducts to interconnect adjacent pipe ducts, and these lamellae may be formed with half-shell portions at each end, one overlying a pipe duct and the other underlying the adjacent pipe duct. The lamellae may be formed with alternating rows of depressions and elevations. In hard to heat areas of the floor, the parallel pipe ducts may be arranged much closer together than in the remainder of the floor, as by having a pitch which is one half the pitch of the pipe ducts in the remainder of the floor and, in such case, the curved members in the hard to heat area of the floor have an angular extent of more than 180 DEG  and a radius which is less from that of the curved members in the remainder of the floor. The lamellae may be metal or may be metal powder-containing plastic.
Patent GB-1065720-A (GB)
Title: Improvements relating to the extraction of impurities from liquids
IPC: C11B3/00
Filed: 1965-06-02
Abstract: 1,065,720. Emulsifier-separators; chemical contact apparatus. INSTITUT DES CORPS GRAS. June 2, 1965 [June 7, 1965], No. 23537/65. Headings BID and B1F. In removing impurities such as soaps or gums from oil, the oil arid some water are supplied to a chamber 24 and emulsified, after which the emulsion is passed through a coalescer 26, in the form of a filter having an affinity for the dispersed phase (cellulosic material or filter paper for a water-in-oil emulsion), large water droplets settle and are withdrawn at 30 and the dispersant oil is withdrawn through a filter 28 (silicone impregnated paper) which is repellant to and retains the remaining dispersed water, to which the impurity has been transferred. The apparatus comprises a baffle 25 and a heating jacket 32. Water outlet passage 30 is used to backwash filter 26, using air bleed 23 as an outlet, and the filter 26 is then dried by compressed air. In Fig. 1, (not shown), the emulsifier, coalescer and separating filter are in separate tanks, and in the separating tank separation occurs by gravity prior to removal of the dispersant by upward flow through the filter. The separating tank may be washed by water. Pumps supply the liquids to the emulsifier and transfer the emulsion to the coalescer.
Patent GB-310730-A (GB)
Title: An improved process of propulsion
IPC: F03G5/00
Filed: 1928-08-15
Abstract: 310,730. LÚon, J. C. Aug. 15, 1928. Self-driving apparatus.-A vehicle or other body is propelled in any direction in space by arranging on its framework A, B two pulleys P, P<1> connected by a belt which is braked at C. Pulley P is driven by any suitable motor carried by the vehicle &c., and it is stated that the reactions set up result in a propelling force which moves the object in any desired direction.
Patent GB-658766-A (GB)
Title: Improvements in and relating to the purification of antibiotics
Inventor: WILKINSON SAMUEL
Filed: 1948-09-07
Abstract: Partially purified polymyxin is purified further by treating in solution the polymyxin as the free base or as a salt thereof with BETA-naphthalene sulphonic acid, separating the salt thus obtained, purifying the salt by recrystallization and recovering the polymyxin therefrom.  The free polymyxin as its salt is reacted in aqueous medium, and as the free base is reacted in solution in an alcohol containing 2 to 5 carbon atoms.  The recrystallized salt may be reacted with an acid to give the salt of polymyxin, or may be reacted with ammonia to liberate the polymyxin which may then be reacted with an acid to form the salt.  The partially purified polymyxin is preferably obtained by the process of Specification 647,925.  In examples: (1) polymyxin b -hydrochloride and b -naphthalene sulphonic acid are reacted in aqueous solution. The product, an oil, is dissolved in aqueous ethanol, and more ethanol then added till the solution is cloudy, when crystallization begins.  After a charcoal treatment the crystallization is repeated.  The crystals suspended in methanol or ethanol are then treated with concentrated sulphuric acid and polymyxin sulphate precipitates on dilution with water; (2) polymyxin B, liberated from its hydrochloride, b -naphthalene sulphonic acid and dry ethanol are mixed, water is then added until a clear solution is obtained, and more ethanol is then added to cause precipitation.  The product is re-crystallized by dissolving in aqueous ethanol and then adding dry ethanol. Polymyxin is then obtained by adding aqueous ammonia, and is converted into its sulphate or hydrochloride.
Patent GB-1069186-A (GB)
Title: Timber hauling attachment for tractors
IPC: A01G23/00
Filed: 1965-06-02
Abstract: 1,069,186. Temporary wheels. H. HELM. June 2, 1965 [June 2, 1964], No. 23541/65. Heading B7D. [Also in Division B8] A timber-hauling attachment for a tractor comprises a beam 3 detachably connected by struts 4 to a plate 2 which is supported by the tractor lift links and which is provided with wheels 10 adapted to be locked in either a ground-engaging position, Fig. 2 (not shown), or a raised inoperative position, Fig. 1. Each wheel 10 is supported in a fork 11 formed with a spigot which is rotatably mounted in a sleeve 13 secured to arms 14. The arms 14 are pivoted at 15 to brackets 18 secured to the plate 2. In operation, with the wheels 10 raised, the beam 3 is lowered to and ground and inserted under a tree trunk by reversing the tractor. The beam is then raised, a chain or rope is wrapped around the trunk and secured to the plate 2 and the wheels 10 are lowered if necessary to support a heavy trunk. In modifications, Figs. 3, 4 (not shown), an attachment for supporting stacks of wood and a winch mounted on a tripod are mounted on the plate 2.
Patent GB-643084-A (GB)
Title: Improvements in or relating to electric discharge apparatus
IPC: H01T4/10
Filed: 1947-08-26
Abstract: 643,084. Spark-gaps. STANDARD TELEPHONES & CABLES, Ltd. Aug. 26, 1947, No. 23553. Convention date, June 18, 1945. [Class 39 (i)] A spark-gap has opposed narrow annular electrode surfaces 1, 2, Fig. 1, and superposed annular members 4, 5 joining a circular orifice 3 co-terminous with the gap around which rotating cooling gas is directed, through the orifice, by tangential passages so that successive sparks occur between different electrode portions. In the preferred form, a chamber 8 in the members 4, 5 is supplied with rotating gas by delivery from a supply line 7 through duct 6 and tangential passages in the dividing wall 9. The gas passes through the spark-gap and is conducted away through orifice 11, duct 12 and the passage 13 in the supporting member 14. In another form, Fig. 3 (not shown), the member 4 is surrounded by a rifled extension, which is arranged so that the lands of the rifling are contiguous with a skirt on the member 5 to provide the tangential passages.
Patent GB-1415237-A (GB)
Title: Cam and cam fallover arrangement for use in a teleprinter decoding  system
IPC: F16H25/00
Filed: 1973-05-17
Abstract: 1415237 Cams GERATEWERK KARLMARX-STADT IM KOMBINAT VEB MESSGERATEWERK ZWONITZ VEB 17 May 1973 23595/73 Heading F2K [Also in Division B6] A cam follower lever 5 is urged against a cam 3 by a pressure lever 11 having a concave curved surface 9 in contact with a roller 8 on the cam follower lever 5, the pressure lever being biased by a spring 10. The cam follower lever is fixed to a shaft 6 carrying a coding vane 7 of a teleprinter.
Patent GB-453726-A (GB)
Title: Device for clamping articles of furniture and the like to floors and other surfaces
IPC: A47B91/08
Filed: 1935-08-23
Abstract: 453,726. Attaching furniture to floors &c. SHAW, G. R., Westhall Copse, Upper Warlingham, Surrey. Aug. 23, 1935, No. 23676. [Class 52 (ii)] A device for clamping articles of furniture, e.g. seats, to the floors of aircraft &c. consists of a resilient block and a clamping stirrup, the base of which engages and grips a projection in or on the floor. Figs. 1 and 2 show a tubular member 3 forming part of the base member of a seat, held between two rubber blocks 1, 2 which are secured by upper and lower U-shaped straps 4, 5. These are clamped together by a locking stirrup 7, the inturned ends 6 of which pass into slotted parts of the straps 4, 5, and a U-shaped stirrup or bar 8 the inturned ends 9 of which pass into holes in lugs 10 on the stirrup 7. The horizontal part of the stirrup 8 is passed through a slot 15 in a floor plate 14 and is engaged with a hook-section part 16 projecting from one side of the slot. In a modification, the part 7 is replaced by a triggerlike fingerpiece, the part 8 being modified accordingly; in another modification for the lower end of a vertical chair leg, the parts 1, 2 are moved horizontally to clamp it.
Patent GB-318243-A (GB)
Title: Improved method of manufacturing ribbed plates for railwayswitches
IPC: B21H7/00
Filed: 1929-08-02
Abstract: 318,243. Vereinigte Stahlwerke Akt.- Ges., and Werthmann, F. Sept. 1, 1928, [Convention date]. Chair plates; chairs with separate jaws.- Ribbed sole plates for points are made by cutting lengths from a rolled bar with two or more ribs, cutting the pieces into members 1, 2 having a single rib, and then welding the members together at 4, 5, inserting if necessary a flat plate or a single-rib section 3 produced by stamping or rolling. Specification 300,506 is referred to.